I live in Canada, but fill up in the USA, (1/3 cheaper almost!), so my setup is to input KMs driven, along with gallons filled up. When I use the mobile site, it asks me how many miles I've driven (instead of KM's), but when I punch in the amount of KMs driven, the math is correct, so really, it's just a display issue, it's asking for miles, but it's correctly doing the math as kilometers. This is only on the mobile site.